Could Black Holes Be Portals to Other Universes?

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Discussion Overview

The discussion explores the concept of black holes potentially serving as portals to other universes, considering whether they could be wormholes or universes themselves. The scope includes speculative theoretical ideas and conceptual exploration of black holes and wormholes.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • Some participants propose that black holes could be wormholes leading to other universes or that our universe might exist within a black hole of another universe.
  • Others argue that while these ideas are possible, they remain speculative and cannot be confirmed with current knowledge.
  • A participant mentions that black holes and wormholes produce the same local spacetime curvature, making it difficult for outside observers to distinguish between them.
  • There is a question regarding the presence of frame dragging in wormholes, with some participants suggesting it applies to rotating black holes but not necessarily to wormholes.
  • Another participant notes that frame dragging, or the Lense-Thirring effect, occurs with any rotating object, though it is challenging to measure.
  • One participant suggests that if parallel universes exist, black holes could serve as entrances to them.

Areas of Agreement / Disagreement

Participants generally agree that the ideas presented are speculative and cannot be confirmed, but multiple competing views remain regarding the nature of black holes and their potential connections to other universes.

Contextual Notes

The discussion includes assumptions about the nature of black holes and wormholes, as well as the limitations of current measurement techniques related to frame dragging.

bondinthesand
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Could a black hole actually be either one of two things: a worm hole that leads to another universe or could a black hole be just another universe like for example our universe is within a black hole that's in a different universe??
 
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Could be. But we don't know (and at the present time cannot know) so any discussion would be purely speculative and therefor against forum rules.
 
Like negitron says, it's possible but we cannot know.

As I've said before in several threads, black holes and worm holes produce the same local spacetime curvature. So, to an outside observer, there is no way to tell the difference.
 
Nabeshin said:
Like negitron says, it's possible but we cannot know.

As I've said before in several threads, black holes and worm holes produce the same local spacetime curvature. So, to an outside observer, there is no way to tell the difference.

I thought there'd be frame dragging with a worm hole. Not so?
 
I'm pretty sure frame dragging applies to rotating black holes (any massive rotating object, really), never heard it applied to worm holes though.
 
Frame dragging, or the Lense-Thirring effect, occurs with any rotating object. It is, however, exceedingly small and difficult to measure. Gravity Probe B is the most recent attempt to confirm this prediction [which it did].
 
If you believe in parallel universes than these could well be the entrance to them!
 

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